Provide an S_CACHE_FILE inode flag that cachefiles can set to ward off
other kernel services and drivers (including itself) from using its cache
files.
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
---
include/linux/fs.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index aa3e3af92220..33d30742b26e 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2003,6 +2003,7 @@ struct super_operations {
#define S_ENCRYPTED 16384 /* Encrypted file (using fs/crypto/) */
#define S_CASEFOLD 32768 /* Casefolded file */
#define S_VERITY 65536 /* Verity file (using fs/verity/) */
+#define S_CACHE_FILE 0x20000 /* File is in use as cache file (eg. fs/cachefiles) */
/*
* Note that nosuid etc flags are inode-specific: setting some file-system
